Action Fit: Bat Action 3-Lug Bolt Diameter: .900 Cartridge: 280 Remington,280 Remington Imp 40,280 Remington Ackley Improved,7 mm - 08 Remington,7 mm BR (Benchrest) Remington,7 mm Express,7 mm IHMSA,7 x 57 mm Imp 40,30 BR (Benchrest) Remington,30 IHMSA Delivery weight: 0.136kg